/* 
  @author cn
  @date 2025-5-15
*/

/* css reset */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
	display: block;
}

body {
	line-height: 1;
}

ol, ul {
	list-style: none;
}

blockquote, q {
	quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}

table {
	border-collapse: collapse;
	border-spacing: 0;
}

/* 通用功能 */
/* 
   css 层叠样式表
     
    选择器 {
        属性:值;
        属性:值;
    }

    分组选择器
    body,html {

    } 

    后代选择器
    html body {

    } 
*/
html,body {
    height: 100%;
}
.page {
    position:absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: pink; */
    background-color: #f1f2f3;
    overflow-y: auto;
}
.page__hd {
    padding: 40px 40px 40px 40px; /* 上右下左 */
}
.page__title {
    text-align: left;
    font-size: 20px;
    font-weight: 400;
}
.page__desc {
    margin-top: 4px;
    color: #4c6ead;
    font-size: 20px;
}